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GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica, Version 1

Metadata Updated: December 6, 2023

The Geoscience Laser Altimeter System (GLAS) instrument on the Ice, Cloud, and land Elevation Satellite (ICESat) provides global measurements of elevation, and repeats measurements along nearly-identical tracks; its primary mission is to measure changes in ice volume (mass balance) over time. This digital elevation model (DEM) of Antarctica is derived from GLAS/ICESat laser altimetry profile data and provides new surface elevation grids of the ice sheets and coastal areas, with greater latitudinal extent and fewer slope-related effects than radar altimetry.

This DEM is generated from the first seven operational periods (from February 2003 through June 2005) of the GLAS instrument. It is provided on polar stereographic grids at 500 m grid spacing. The grid covers all of Antarctica north of 86° S. Elevations are reported as centimeters above the datums, relative to both the WGS 84 ellipsoid and the EGM96 geoid, in two separate elevation data files. A data quality map of the interpolation distance is distributed in addition to the elevation data. ENVI header files are also provided.

The data are in 4-byte (long) signed integer binary files (big endian byte order) and are available via FTP.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date December 6, 2023
Publisher NASA NSIDC DAAC
Maintainer
Identifier C1386204222-NSIDCV0
Data First Published 2003-02-01
Language en-US
Data Last Modified 2005-06-30
Category geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation GLAS/ICESat 500 m Laser Altimetry Digital Elevation Model of Antarctica, Version 1. Version 1. Archived by National Aeronautics and Space Administration, U.S. Government, NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/K2IMI0L24BRJ.
Harvest Object Id c2ce3ed5-a4f1-40cc-a53e-92462fa2a2f8
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://doi.org/10.5067/K2IMI0L24BRJ
Metadata Type geospatial
Old Spatial -180.0 -86.0 180.0 -63.0
Program Code 026:001
Source Datajson Identifier True
Source Hash b993289cecdb72f6754597a6a3649a9d44fb796061963f7a08eefff516387c59
Source Schema Version 1.1
Spatial
Temporal 2003-02-01T00:00:00Z/2005-06-30T23:59:59.999Z

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